Diltiazem is a medication used to prevent angina, which causes chest pain. It helps by improving exercise capacity and reducing the frequency of angina attacks. Diltiazem is part of a group of drugs called calcium channel blockers. It works by relaxing blood vessels in the body and heart, reducing heart rate, which makes it easier for blood to flow and lessens the heart’s workload.
When taking diltiazem orally, it’s important to follow your doctor’s instructions, typically meaning you take it three to four times a day before meals and at bedtime. Your doctor will determine the right dose based on your condition, response to treatment, and other medications you might be using. Make sure to inform your doctor and pharmacist about all the medications you take, including prescription, over-the-counter, and herbal products. Your doctor might adjust your dose gradually, so it’s essential to follow their advice carefully.
To get the best results from diltiazem, take it consistently and at the same time each day. This medication should be taken regularly to prevent angina and is not meant for treating an angina attack. If you experience an angina attack, follow your doctor’s instructions on using other medications like sublingual nitroglycerin. For more details, consult your doctor or pharmacist.
How long diltiazem stays in one’s system can vary, but its half-life is roughly 3 to 4.5 hours. This means it takes about that time for half of the drug to be out of your system. Typically, it might take around 16.5 to 22.5 hours for diltiazem to be mostly eliminated after stopping. While the medication might be out of your body, its effects can still linger because of residual activity or interactions. If you have concerns, it’s best to discuss them with your doctor or pharmacist.
Possible side effects include dizziness, lightheadedness, weakness, nausea, flushing, constipation, and headache. If any of these persist or worsen, let your doctor or pharmacist know right away. To avoid dizziness and lightheadedness, be careful when getting up from sitting or lying down. Most people don’t experience serious side effects, but if you do, seek medical help immediately.
Before starting diltiazem, let your doctor know about any allergies or health history, especially if you have heart rhythm disorders, liver or kidney disease, or heart failure. Diltiazem can cause dizziness, which may be heightened when drinking alcohol or using marijuana. Until you’re sure how diltiazem affects you, avoid tasks that require full alertness, such as driving. Limit alcohol, and if you use marijuana, talk with your doctor. If you’re having surgery, inform your doctor about all your medications.
Older adults might be more sensitive to diltiazem’s side effects, especially dizziness, constipation, or swelling. During pregnancy, use this medication only if necessary and discuss the risks and benefits with your doctor. Diltiazem can pass into breast milk, so consult your doctor before breastfeeding.
Drug interactions can affect how diltiazem works or raise the risk of severe side effects. Keep a list of all products you use and share it with your healthcare providers. Do not start, stop, or change any medications without consulting your doctor. Some products that may interact with diltiazem include digoxin and fingolimod. Certain drugs might alter how diltiazem leaves your body, affecting its efficacy.
If you miss a dose, take it as soon as you remember unless it’s close to your next dose, in which case, skip the missed one. Store diltiazem at room temperature, away from light and moisture. Keep all medications away from children and pets. Properly dispose of any unwanted or expired medications. For more information on disposal, consult your pharmacist.
